Speed-regulating and brake mechanism.



' F. C. GRAW.

SPEED REGULATING AND BRAKE MBGHAN'ISM.

PPLIoATIoN FILED APR. 1a, 1905. BENBWED me. 29, 1907.

\ HHH/muli w, GM

Patented July 13, 1909.

4 BHBETB-SHEET 1.

:1.1 III lllll INVENTOR @www ATTORNEY I'. C. GRAW.

SPEED REGULATING AND BRAKE MEGHANISM.

APPLIOATION FILED un. 1a, 1005. BENBWED Ama-29, 1907.

928,182. PatentedJuly 13, 1909. 4 SHEETS-SHEET 2.

WITNESSES:

ATTORN EY A P. C. GRAW. SPEED REGULATING AND BRAKE MBGHANISM.

APPLICATION FILED APB.. 13, 1905. RENEWED AUG. 29, 1907.

ATTORNEY F. C. GRAW.

SPEED REGULATING AND BRAKE MECHANISM.

APPLIOATION FILED APB.13, 1905.. BBNBWBD AUG. 29, 1907.

928,182. Patented July 13, 1909.

Y UNITED STATES PATENT OFFICE.

FRANK C. GRAW, OF SOUTH NORWALK. CONNECTICUT, ASSIGNOR OF ONE-HALF TO FRANKLIN M. RAYMOND, OF SAUGATUCK, CONNECTICUT.

SPEED-REGULATING AND BRAKE MECHANISM.

Application led April 13, 1905, Serial No. 255,317. Renewed August 29, 1907.

To all whom 'it may concern: V

Be it known that I, FRANK C. GRAW, a citizen of the United States, residing at South Norwalk, county of Fairfield, State of Connecticut, have invented a new and useful Speed-Regulatin and Brake Mechanism, of which the fo lowing is a specification.

My invention has for its object to produce speed regulating and brake mechanism especially adapted for use in connection with ex losive en mes, as upon motor vehicles..

t is' one o the objects of this invention to produce a mechanism that can be a lied to any engine or power shaft, which wilenable the operator to start, increase speed, slow up, stop or reverse a driving shaft, which may be suitably connected up as to the wheel shaft of a motor vehicle, without in any way affecting the speed or power of the engine or power shaft.

further object of the invention is to roduce speed regulatingmechanism wiich shall have direct and positive connection with the power shaft, thus avoiding the use ofthe usual clutch and change speed gearing.

A further object of the invention is to roduce speed regulating mechanism in w ich the transmission of power shall be accomplished by eccentrics and without the use of cranks or caring, the changes in s eed being gradua and without shock or low both in hill climbing and on a level road.

A further object of the invention is to roduce speed regulating mechanism in w rich adjustable eccentrics and their carrying disks shall serve as a fiy wheel, thereby greatly lessening the weight and the space required, as no fly wheel is required upon the en ine.

further object of the invention is to produce speed regulating mechanism having a balance wheel consisting of adjustable eccentries and their carrying disks in which the center of gravity of the eccentrics will be shifted outward or inward relative to the center of rotation of the said balance wheel as the speed in either direction is increased or diminished, thereby imparting' to the said balance wheel greater momentum as the speed is increased andreduced momentum as the speed is diminished.

A further object of the invention 1s to pro duce speed regulating mechanism which will itself perform the functions of brake mech.

Patented July 13,. 1909.

Serial No. 390,643.

anism, thus rendering unnecessary the brake mechanisms now required upon motor vehicles, and giving the operator perfect control of a motor vehicle at all times, an especially important feature in hill climbing or descending. i

A further object of the invention is to produce speed regulating mechanism which can be wholly controlled by a single rock shaft which may be operated by the foot.

A further object of the invention is to roduce speed regulating mechanism whic is wholly independent of the engine, ie uires no clutch connection therewith' and wi l enable the operator to transmit to the driving shaft any required speed in either directionv without any interference whatever with or adjustment of the engine, adjustment of the sparking mechanism or change in the fuel supply -and without the slightestshock to the engine.

With these and other objects in view the invention consists in certain constructions and in certain arts, im rovements and combinations wliic will be ereinafter described and then specifically pointed out in the claims hereunto'appended:

In the accompanying drawings forming a part of this speciiication, in which like characters of reference indicate the saine parts, Figure lis a plan view of my novel speed regulating mechanism complete, the eccentrics being in section on the line 1-1- in Fig. 4 and shown at rest, that is in the inoperative position, so that no movement is imparted tothe driving shaft; Fig. 2 a similar view on the line 1-2 in Fig. 4, the eccentrics being in operative position and adjusted at their farthest throw to give thegreatest possible forward specd to the driving shaft; Fig. 3 a sectionof the parts on the line 3-3 in Fig. 2, the eccentrics being in operative position and adjusted at their farthest throw to give, the greatest ossible reverse speed to the driving shaft ig. 4 a section on the line 4-4 in Fig. 1, the eccentrics being in the 'inoperative osition and the driving shaft at rest, as in ig. 1; Fig. 5 a detailelevation partly in section, of one of the eccentric straps, the corresponding drum strap and the clutch mechanism detached, the position of the parts corresponding with Figs. 1 and 4; Fig. 6 a plan view corres onding therewith,

partly in section on the ine 6-6 in Fig. 5;

ig. 7 a detail sectional view illustrating the o eration of one of the sliding pins that move t e sliding collars outward on the driving shaft and place the lugs thereon out of engagement with the corresponding star wheel; `ig. 8 a detail sectional view on the line 8 -8 in Fig. 7, the position bein shifted slightly to show the engagement o one of the star wheels with the lugs on`the corresponding sliding collar; Fig. 9 a detail sectional view on the line 9-9 in Fig. 1, showing the foot lever and cam in their normal position; .and Fig. 10 is an inverted plan view correspondirlig to Fig. 9, showing the roller in the cam s ot.

' It should be understood that the position in which my novels eed regulating mechanism is placed is who y unimportant so far as the principle of the invention is concerned, and that the mechanism may be placed in any osition best adapted to the special use to W ich it is to be applied.

In the drawings I have illustrated the mechanism as resting upon a floor in substantially the position it would occu y when used in a power launch or in a mac ine shop. When applied to a motor carriage, which is the use I s iall refer to for the purposes of this s eciication, it would be suspended from a ove and would be under the body of the vehicle, the rock shaft and foot lever only being above the floor of the body.

In use, in whatever position it may be placed, the mechanism is inclosed in a suitable case, not shown in the drawings, and runs in a bath of oil.

10 denotes the engine or power shaft shown as journaled in boxes 11 upon standards 1,2 which may either. rest upon a suitable support, as indicated in the drawings, or be suspended from above.

13 denotes the driving shaft which is connected to the ower shaft by the novels eed regulating anti) brake mechanism which am about to describe. The driving shaft is ournaled in boxes 14 upon standards 15 which may either rest u on a suitable support, as indicated in tlie rawings, or be suspended from above.

16 denotes sprocket wheels upon the driving shaft from which a sprocket chain, not shown, extends to the shaft to be driven, for example, the wheel shaft of a motor vehicle.

The vitally important feature of the invention is that eccentrics carried by the power shaft may be so adjusted as to im art movement in either direction to the driving shaft by means of clutches which as and release the driving shaft alternate t us keeping it under perfect control at al times either in driving or reversing or holdin it stationary if required. The power sha t is provided with an enlargement 17 having a transverse recess 18 the purpose of which will presently be explained.

19 denotes carrying disks shown as provided'with hubs 20 and rigidl secured to the l centrics which are indicated respectively by 28 and 29. Each eccentric and slide4 is provided with a slot 26 through which the ower shaft passes freely, asclearly shown in ig. 3. The peripheries of the eccentrics are provided with groovesv 27 to receive eccentric stra s indicated respectively by 24 and 25. Eac eccentric is rovided on opposite sides of the groove witli) a raised and a depressed peripheral surface, said surfaces merging into each other by means of inclines 30. The raised surfaces on eccentric 28 are indicated respectively by 41 and 42 and the depressed surfaces are indicated respectively by 43 and 44, raised peripheral surface 41 lying on the opposite side of the groove from depressed eripheral surface 43 and raised sur ace 42 i) ing on the o posite side of .the groove from epressed sur ace 44. The raised surfaces on eccentric 29 are indicated respectively by 45 and 46 and the de ressed surfaces are indicated respectively 1byv 47 and 48, raised peri heral surface 45 lying on the opposite side ofp the groove from de ressed peripheral surface 47, and raised surface 46 lying on the oposite side of the groove from depressedsurace 48, as clearly shown in Figs. 3 and 4 which see in connection with Figs. 1 and 2. It should be noted furthermore, and will be clearly understood from Fig. 3, that the respective raised and depressed surfaces are transposed on the two eccentrics; that is to say, as seen in Fig. 3, the depressed. surface on the right hand side of eccentric 28 is nearest the point of view and the raised surface farthest from the point of view, and on eccentric 29 the raised surface at the right is nearest the oint of view and the depressed surface fartiiest therefrom. The functions of the raised and depressed surfaces and the reasons for the special arrangement just referred to will presently be described in full'.

Each eccentric is provided on its inner face on o posite vsides of the slot 26 with racks 31 w ch are engaged kby inions 32 carried by a shaft 33 which exten s transversely through the enlargement of the power shaft. Shaft 33 is retained inplace by means of a worm gear 34 which is ke ed or -otherwise rigidly secured thereto. shownas provided with hubs 35 which are secured to the ends ofthe shaft by means of set screws, see' Fig. 4. Worm gear 34 is operatively engaged by a worm 36 on a shaft 37 he pinions are' which is journaled in disks 19 and is provided at its ends with star wheels 38 and 39 which` lie on lthe outer sides of the hubs of the disks. v

gage corresponding grooves in the enlarge-1 reverse Lthe rotation of the driving shaft -`by mechanism which l will now explain.

49 and 50 denote collars which are adapted to slide on the power shaft and are connected by means of arms 51 with collars 52 which are rigidl secured as by means of set screws to a longitudinally movable rod 53 which is mounted to slide freely in standards 54, 55 and 56. V

57 denotes coil springs surrounding rod 53 the ends of which bear respectively against the opposite sides of bearing 55 and against collars 58 which are rigidly securedto the rod as b means of set screws. The normal actlon o these springs is to retain rodl 53 at its normal position with the eecentrics in their inoperative position as in Fig. 1. The tension ofthe springs may be adjusted at any time by shiftin collars 58 on the rod, ysaid collars being wolly independent of collars 52 from which arms 51 extend. Rod 53 is provided on its upper side with a roller 59 )ournaled on a pin extending from the rod. This roller enga es an oblique roove60 in a cam 61 carried y a rock sha t 62 which is mounted to oscillate .in standard 56.

63 denotesan operating lever upon the rock shaft, in the present instance a foot le" ver, although it is obvious that a hand lever may be .attached to the rock shaft if preferred. In the present instance l have shown the normal osition of the foot lever as slightly tilted as in ig. 9, the toc end ofthe lever being slightly higher than the heel end, in which position it is retained by the springs 57,

these springs being strong enough to return rod 53 to its normal position, returning the foot lever to its normal position through the engagement of the roller with the cam groove asl soon as pressure in either direction upon the foot lever is relieved.

Slidin collar 49 upon the power shaft is provide on its inner face with lugs 64 which are adapted to be engaged by thewings of star wheel 38 on the outer side thereof, that 50 is on the side away from the power shaft,

whereby rotary movement is imparted in one direction to the'worm shaft and worm.

As already stated, the movement im arted to the worm shaft by means of starw eel 38 increases the speed of the driving shaft\by moving the eccentrics outward toward the position shown in Fig. 2.

Sliding collar 50 upon the power shaft is provided on its inner face with lugs 65 and between lugs 65 with shorter lugs 66, one

only of which is shown in the drawings. Lugs are adapted to be engaged by the wings of star wheel 39` on the inner side thereof,that is on the side toward the power 65 shaft, whereby rotary movement is imparted the position shown in Fig. 2.

to the worm shaft and worm inthe o posite direction from that imparted to it t rough the en agement of star wheel 38 with lugs 64 on colar 49. The movement imparted to the worm shaft by means of star wheel 39 and lugs 65 decreases the speed ofthe driving shaft by moving the eccentrics inward from W hen the eccentrics are moved inward from this osition, the speed of the driving shaft wi be decreased until they reach the position shown in Fig. 1, at which point no movement is imparted to the driving shaft. Should this movement ofthe eccentrics be continued and they be moved from the position shown in Fig. 1 -towardthe position shown in Fig. 3, reverse movement will be imparted to the driving shaft in a manner presently to be fully explained, the reverse speed depending upon the distance outward to which the eccentrics are moved, that is upon the throw of the eccentrics the same as in driving. It will be noted in Fig. 3 that the position ofthe eccentrics has been reversed and that the edges of said cccentrics which were farthest from the driving shaft in Fig.- 2 are nearest to the driving shaft in Fig. 3, and that the .edges that were nearest to the drivin shaft in Fig. 2 are the farthest therefrom in ig. 3.

Lugs 66 upon sliding collar 50 are only brought into usein the case of an emergency. Under ordinary circumstances, when it is desired to decrease the speed of the driving shaft,the rock shaft is only tilted far enough by moving the heel end ofthe foot lever downward to place lugs 65 in position to be engaged by star wheel 39. Should it be required however to reverse the movement of lthe-driving shaft instantly, a further downward movement of theheel end of the foot lever will move sliding collar 50 still farther inward toward the contiguous carrying disk 19 and will lace lugs 66 as well as 1u s 65 in position to e engaged by star whee 39 so that the star wheel and worm shaft will be e bases of which are adapted to pass into, grooves 68 in the rear faces of the eccen.

trios, that is the faces of the eccentrics lying contiguous to the disks. The mner end of ,the groove in eccentric 29 and the outer end of the groove 1n eccentric 28 terminate m an incline 69. Wheny the eccentries are moved to-their greatest throw in driving, as in Fig. 2, thexpin corresponding with eccentric 28 will ridejup the incline 69-,at the outer end of the slot in said eccentric and upon the outer face of said eccentric, the effect of which is to force said pin into engagement with sliding collar 49 and force said collar outward away from the disk, the movement being far enough to just carry the lugs upon said collar out ofengagement with star Wheel 38. When the eccentrics are moved to their greatest throw in reversing, as in Fig. 3, the pin corres ending with-eccentric 29 will ride up the inc ine 69 at the inner end of the slot in said eccentricl and upon the outer face of said eccentric, the effect of which is to force said pin into engagement with sliding collar 50 and force said collar outward away from the disk carrying the lugs upon said collar out of engagement with star wheel 39. Suppose the eccentrics to be at their mid or inoperative position as in Fig. 1, and that it is desired to start the driving shaft forward. The toe end of the foot lever is pressed downward until sufficient seed is attained, then the pressure is relieve and springs 57 act to return the sliding collars; rod 53 and the foot lever to their vnormal position. Sup ose however that the operator does not relieve the pressure upon the foot lever; sliding collar 49 Will be retained in such a position that lugs 64 thereon will be engaged by star wheel 38 and the worm shaft will continue to be rotated. The effect will necessarily be to throw the eccentrics outward as in Fig. 2 until the pin 67 acting in connection with eccentric 28 will ride up the incline 69 of the groove 68 therein and enga e sliding collar 49 on the power shaft an move it outward far enough to place the lugs thereon out of engagement with star wheel 38, thus preventing any possible damage to any of the parts even should the operator press the toe end of the foot lever downward as far as the cam slot will permit and retain it there. The onl effect will be that the power shaft wil be driven at the highest speed until the foot lever is tilted in the opposite direction, that is the heel end pressed downward, and slidin collar 50 moved to a position that will pace the lugs thereon in position to be engaged by star wheel 39. Should the operator desire to reverse and hold the heel end of the foot lever pressedl down, the eccentrics will be thrown to the position shown in Fig. 3 and the incline 69 at the inner end of-eccentric 29, which was ino erative when the eccentrics were thrown to t e driving position, will now become operative to move the corresponding pin 67 outward, causing it to engage sliding collar 50 on the power shaft and move it outward far enough to place the lugs thereon out of en agement with star wheel 39.

n addition to the functions already described, the carryin disks and eccentrics serve as a balance w eel for the engine and dispense entirely with the use of an ordinary balance wheel. This balance wheel formed by the carrying disks and eccentrics tries.

and which I have indicated by 99, has moreover a varying momentum which is dependent upon the speed im arted to the driving shaft and varies with t 1e speed of the driving shaft.

As already explained, the speed imparted to the driving shaft depends upon the throw of the eccentrics that is to say, the farther outward from the power shaft the greater diameter of the eccentrics is moved, the greater will be the speed imparted to the driving shaft and the greater will be the momentum of the balance wheel, fi. e. the carrying disks and eccentrics, owing to the shifting of the center of gravity of the eccentrics outward in opposite directions from the power shaft. Outward movementv therefore of the eccentrics to increase the speed of the driving shaft in either driving or reversing will cor' res ondingly increase the momentum of the ba ance wheel, and inward movement of the eccentrics to decrease the speed of the driving shaft in either driving or reversin will decrease the momentum of the ba ance wheel, which will be least when the eccentrics are at their mid or inoperative position, as in Fig. 1, and no movement whatever is im arted to the driving shaft.

will now describe the mechanism by which the power shaft is driven in either direction or held stationary. Driving shaft 13 is shown as journaled in boxes 14 upon standards 15. This shaft carries s rocket wheels 16 from which any driven shaas the wheel shaft of a motor vehicle may be driven by means of sprocket chains, not shown. The driving shaft also carries a drum 73 which is provided with grooves, lsee dotted lines Fig. 3, to receive straps 74 and 75, which are adapted to alternately grip and release the drum. Each of the driving eccentric straps is made in two parts as usual, one part of each strap comprising a body 76 from which an arm 77 extends. At the outer end of each arm is a yoke 78 which is pivoted, as at 81, to an arm 79 extending from one of the straps which inclose drum 73 for example, stra 74. The arms 79 extend from the ends of the drum straps farthest from the eccen- The Vother end of each drum strap is provided with an arm 80. The inner faces of these arms-lie parallel. The outer face of each arm 8() is an arc of a circle of which the pivot 81 of the yoke to arm 79 is the center. 82 denotes shoes lying between the arms of the yokes 78, the inner faces of which are curved to correspond with the curved outer faces of arms 80. 83 denotes rods, one end of each rod being connected to one of the shoes 82 and extending through one of the arms 77 which is soshaped as to permit the rod to extend through it in a longitudinally oblique direction, thimbles 84, which may be integral with the yokes, being preferably provided in the arms as bearings for the rods.

' the dri-ving At the opposite ends of the rods are stra sl these shafts extends outward from the sidey 4of thc body and has secured at one end a dog 90 and at the other end a, dog 91. These dogs extend in opposite directions and are ada ted to engage the raised and depressed su aces on eccentrics 28 kand 29 by which they are caused to oscillate eccentrics 86 whereby the drum straps are caused tov alternatel grip and release the drum on the driving s aft to either drive it'forward or backward or hold it stationary as may be re quired.

The operation is as followsz' For convenience in description, eccentrics 28 and 29 will be spoken of as the driving eccentrics, and eccentrics 86 will be spoken of as the grippi'ng eccentrics. When the driving eccentries are in the osition shown in Fig.` 1, thaty is drawn mwar to their ino rative position, 1t is obvious that their rotation with the disks will. cause no throw of the eccentric straps, bodies 7 6 and arms 77, so that no movement will be imparted to the driving shaft. The griippingoperation upon the driving shaft w continue as before and is now a brakin operation, as each of the drum straps wi a ternately grlilpfand release the drum upon s a t. and releasing of the driving shaft is e ecte throughl the operation of the gripping eccentrics, which in turn are actuated b the driving eccentrics, it bein understoo( of course that it is contemplate to regulate the speed, stop or reverse without an interference whatever with the engine. nderstanding therefore that the rotation of the driving eccentrics is always the same without regard to their throw, it will be obvious that their action upon the gripping eccentrics is always the same. The raised surfaces of the driving eccentrics are shown as extending applroximately one-third aroun'd their perip eries althou h this is immaterial as the same result would e produced b pins or protuberances on the peripheries o t e driving eccentrics, as when t e gripping eccentrics are once act'uated'they must remain in the position in which they are laced until actuated in the opposite direction. I preferably, however, as shown in the drawings, make the raised surfaces long enough so that each dog will rest on a raised surface most of the time that the co-acting dog 'is resting on a depressed surface. The effect therefore of Each eccen- This alternate gri pin each rotation of a driving eccentric is to oscillate the dogs connected to the corresponding gripping eccentric in each direction, one of the movements causing-the drum stra to gri the drum and retain it gripped unti the ot er movement takes place, which `causes the drum strap to release the drum and leave it released until it is again. gripped during the next rotation of the driving eccentric. The gripping movement is caused b the action of a shoe 82 upon the correspon ingi curved face of an arm 80, and is wholly in ependent of the throw ofthe corresponding driving eccentric. The gripping operatlonwlien there is no throwof the driving eccentrics will be readily understood from Figs. .1 and 4 in connection with Figs. 5 and 6, which show eccentric 29, eccentric stra 25 and-drum strap 75. As the dogs 90-and 91 and the correspondin shaft 89 and grippin eccentric 86 are rigidi; secured together an move as one piece and7 as the disks and driving eccentrics rotate from right to left, as indicated by arrows in Figs. 3 and 4, it follows that when dog 90 rides u one of the inclines 30 of a raised riphera surface, for example surface 45 ofpdriving eccentric 29, and dog 91 rides downanother incline 30 and upon depressed peripheral surface 47 of said eccentric, that the corresponding gripping eccentric 86 Will be oscillated within strap 85 and the shaft 89, which is the center of oscillation of the eccentric, will be moved downward ina'n arc and in the direction of the drum onl the driving shaft. In other words, the greater diameter of the saidgrip ping eccentric will be oscillated backward and will draw rod 83 and shoe 82 backward away from arm 80 on drum strap 75 and will relieve 'the pressure of the shoe onsaid arm and consequentl relieve the grip of said drum strap on t e drum, so that the drum may rotate freely Within the strap or thestrap may be oscillated upon the drum When. dog 91 ridesupone o the inclines 30 of raised peripheral surface 46 of eccentric 29, and dog 90 rides down another incline 30 and upon depressed peripheral surface 48 of said eccentric, the corresponding gripping eccentric 86 will be again oscillated within strap 85 and the shaft 89 will be moved upward in an arc and the greater diameter of said eccentric will be oscillated forward and will force the drum at the instant the other drum strap grips it and vice versa, so that the driving shaft is at all times under the control of the gripping and releasing mechanism.

n reversing, that is when the dnvlng shaft is being turned backward, as in the direction of the arrow in Fig. 3, the gripping movement will take place when the driving eccentrics are at the extreme of their throw toward'the left. as seen in said figure, and will continue until the are at the extreme of their throw toward t e right, at which instant the release takes place. In Fig. 3, driving eccentric 29 and the intermediate connections just described are about to cause drum strap 75 to release the drum, and driving eccentric 28 and the intermediate e connections are about to cause drum strap 74 to grip the drum. The reversing movement of the driving shaft is imparted thereto by the rotary pressure toward the right exerted thereon bv the driving eccentrics, drum straps an intermediate connections. The speed at which the driving shaft is rotated o viously depends upon the length of time pressure is exerted upon it which is determined by-the throw of the eccentrics. In Fig. 3, as already stated, the eccentrics are at the extreme of their movement outward and are imparting to the driving shaft the greatest possible reverse movement.

As already explained, the operating lever, in the present instance a foot lever, is returned to itsnormal position by springs 57 the instant pressure thereon is relieved, which returns the longitudinally movable rod 53 carrying sliding collars 49 and 50 to its normal position, as clearl shown in Fig. 1, in which )osition none of t e lugs on either of the sli ing collars can be engaged by the star wheels to operate the worm shaft and worm and throw the eccentrics outward. In starting, the operator presses downward upon the toe end of the foot lever which moves the eccentrics from the osition shown in Fig. 1 toward the position s own in Fig. 2. Contmued pressure upon the foot lever would continue the engagement of star wheel 38 with the lugs 64 on sliding collar 49, the effect of which would be to move the eccentrics outward to their farthest throw and give full speed to the driving shaft. When the eccentrics are in this position, further engagement of the star wheel with the lugs 64 is stopped through the action of one of the sliding pins'67 which rides up one of the inclines 69 of the corres ondlng groove 68, forcing said pin outwar andforcing sliding collar 49 outward on the driving shat carryin lugs 64 out of the engaging position. To re uce the speed, the o erator .would press downward upon the hee end of the foot lever, the effect of which would be to move the eccentrics from the position shown in Fig. 2

toward the position shown in Fig. 1. The heel pressure upon the foot lever would require to be but slight and to'last for an instant only-"ust sufficient time to cause the lugs 65 on shding collar 50, which would be moved into the engagin position, to be engaged by star wheel 39 or an instant toimpart the necessary inward movement to the eccentrics to reduce the speed as desired. Should the heel pressure upon the foot lever be continued, sliding collar 50 will be moved backward and the lugs 65 carried out of the engaging position b one of the sliding pins 67 in the manner escrib'ed Should it be required to stop the speed of the. driving shaft very quickly and apply reverse movement thereto, the heel end of the foot lever Awould be pressed down hard, which would place lugs 66 on sliding collar 50, as well as lugs 65, in position to be engaged by the star wheel and would cause the star wheel to be actuated four times instead of twice during each rotation of the eccentrics and would' consequently throw the eccentrics to the reversing position very quickly.

The action of the gri ping" mechanism inl turning the driving sha t forward is just the reverse of the gripping operation in reversing, which has already been fully described. Fig. 2 shows the. position of the eccentrics when driving but does not show the gripping mechanism. Fig. 3 shows the position o the eccentrics in reversing and 'also shows the 'gripping mechanism in full. In driving, that is when the driving shaft is being turned forward, in the opposite direction row in Fig. 3, the griping movement will take place when the driving eccentrics are at the extreme of their throw toward the right, as seen in said figure, and will continue until "they are at the extreme of their throw toward the left, at which instant the release takes place. -As seen in Fig. 3, if the driving shaft was being turned forward, driving ec-. centric 28 and the intermediate connections would be causing drum strap 74 to grip the drum and about to release it, and driving eccentric 29-and the intermediate connections would be holding drum strap 75 released and about to gri i the drum.

Having t us describedmy invention I claim: l

1. In a device of the character described the combination with a power shaft having an enlargement with a transverse recess, a shaft'passing through said enlargement and carrym and pinlons, of carrying disks on said shaft, eccentrics adapted to slide transverselyon said disks and having racks on their inner faces which are engagedfby the pinions, a

irom the are a worm wheel lying in the recess y.

worm engaging the worm wheel whereby the latter many be rotated to move the eccentrics and connections between said eccentrics and collars are connected, springs for retaining driving shaft for rotating the latter substantially as described, for the purpose specified.

2. In a device of the character described the combination with a power shaft having an enlargement with a transverse recess, a shaft carrying pinions and having aworm wheel lying in said recess, of carrying disks on the power shaft, eccentrics adapted to slide transversely on said disks and provided with racks engaged by the inions, a shaft carrying a worm engagingv t e worm wheel and having star wheels at its ends, meansfor actuating either star wheel, whereby the eccenitrics may be moved oppositely in either direction, a driving shaft, and connections between said eccentrics and driving shaft for rotatin the latter.

3. n a device of the character described the combination with a power shaft, carrying disks thereon, eccentrics adapted to .slide transversely on said disks, a worm shaft journaled in the disks and having star wheels at its ends and connecting mechanism intermediate the worm shaft and the eccentrics whereby the latter may be moved oppositely whereby the la tter may be moved oppositely in either direction, of sliding collars on the power shaft having lugs adapted to beengaged by the respective star wheels, means or moving either of said sliding collars into a position that will cause the lugs thereon to be engaged by the corresponding star wheel, springs for returning the sliding collars to t eir normal position the instant the moving power 1s relieved, a driving shaft, and connections between said eccentrics and driving shaft for rotating-the latter.

5. In a device of 'the character described the combination with a power shaft, carrying disks thereon, eccentrics adapted to slide transversely on said disks, a worm shaft Journaled in the disks and having star wheels at its ends and connecting mechanism intermediate tbe worin shaft and the eccentrics whereby the latter may be moved oppositely in either direction, of sliding collars on the power shaft having lugs adapted to be engaged by the res iective star wheels, a longitudinally movable rod to which the sliding said rod and the sliding collars at the inoperative position, means for moving said rod longitudinally to place either slidin collar in the operative position, a driving s aft, and connections between said eccentrics and driving shaft for rotating the latter.

6. In a device of the character described ing disks thereon, eccentrics adapted to slide transversely on said disks, a Worin shaft journaled in the disks and having star wheels at its ends and connecting mechanism intermediate the worm shaft and the eccentrics whereby the latter may be moved oppositely in either direction, of sliding collars on the power shaft having lugs adapted to be en gaged by the respective star wheels, a longitudinally movable rod to which the sliding collars are connected, a roller journaled on a pin extending from said rod, springs for retaining said rod and the collars at the inoperative position, a cam having a slot engaged Aby'said roller, a rock shaft by which the cam is oscillated to move .the rod longitudinally, a driving shaft, and connections between said eccentrics and driving shaft for rotating the latter.

7. In a device of the characterv described the combination with a power shaft,- carrying disks thereon, eccentrics adapted to slide transversely on said disks, a worm shaft j ournaled in the disks and having star wheels at its ends and connecting mechanism intermediate the worm shaft and the eccentrics whereby the latter may be moved oppositely in either direction, of sliding collars on theV the combination with a power shaft, carryi ioo power shaft having lugs adapted to be en gaged by the respective star wheels, a longitudinally movable rod to which the sliding collars are connected, a roller journaled on a pin extending from said rod, springs for retaining said rod and collars at the inoperative position, a cam having a slot engaged b y said roller, a rock shaft to which the cam is connected, a foot lever by which the rock shaft and cam are oscillated to rotate the worm shaft and move the eccentrics, adriving shaft, and connections between s aid eccentrics and driving shaft for rotating the latter.

8. In a device of the character described the combination with a power shaft, carry- Aing disks thereon, eccentrics adapted to slide movable rod to which collars 52 are connected, adjustable collars on said rod, a standard 55 in which said rod slides, springs bearing against the adjustable collars and the standard to retain the rod in its normal position, means for moving said rod longitudinally against the power of the springs, a driving shaft, and connections between said eccentrics and driving shaft for rotating the latter.

9. In a device of the character described the combination with the power shaft, carrying disks, eccentrics, worm shaft and star wheels, of a sliding collar on the power shaft having lugs adapted to be engaged by one of the stai' wheels on the outer side thereof, a sliding collar on the power shaft having lugs adapted to be engaged bythe other star wheel on the inner side thereof, means for moving either of said collars into operative position, a driving shaft, and connections between said eccentrics and driving shaft for rotating the latter.

10. In a device of the character described thc combination with the power shaft, carrying disks, eccentrics, worm shaft and star wheels, of a sliding collar on the power shaft having lugs adapted to be engaged by one of the star wheels to move theeccentrics oppositely, a sliding collar having lugs adapted to be engaged by the other star wheel to reverse the movement of the eccentrics, a foot lever and intermediate connections for moving either of said collars into operative position, a driving shaft, and connections between said eccentrics and driving shaft lfor rotating the latter.

11. In a device of the character described the combination with the power shaft, carrying disks, eccentrics, worm shaft and star Wheels, of a driving shaft, connections intermediate the eccentrics and the driving shaft for imparting rotation thereto` in either direction, a sliding collar on the power shaft having lugs adapted to be engaged by one of the star wheels to move the cccentrics outward oppositcly to increase their throw and the speed of the driving shaft and a sliding collar on the power shaft having lugs adapted to be engaged by the other stai' wheel to move the eccentrics in the opposite direction and decrease their throw and the speed of the driving shaft and to reverse the driving shaft.

12. In a device of the character described the combination with the power shaft, carrying disks, eccentrics, worm shaft and star wheels, of a driving shaft, connections intermediate the eccentrics and the driving shaft, for the purpose set forth, a sliding collar on the power shaft having lugs adapted to be engaged by one of the star wheels to move the eccentrics oppositely to decrease their throw and the speed of the driving shaft and to reverse the driving shaft,

rving disks "thereon, eccentrics adapted toslide oppositelyon the carrying disks and having grooves in their outer faces with inclines atl their ends, a worm shaft journaled in the disks and having star wheels at its ends and connections intermediate said worm shaft and the eecentries for moving the eccentrics oppositely in either direction, of sliding collars on the power shaft having -lugs adapted to be engaged by the res ective star wheels to actuate the worm s aft in either direction, sliding pins in the carrying disks whose inner ends are ada ted to ride up the inclines of the grooves an whose outer ends' are adapted to engage the slidin collars respectively to move them outwar on the power shaft and place the lugs thereon out of engaging position when the eccentrics are moved outward in either direction to the extreme of their throw, a driving shaft, and connections between said eccentrics and driving shaft for rotating the latter.

14. In a 'device of the character described the combination with the power shaft, carrying disks and eccentrics adapted to slide transversely thereon and having rooves in their outer faces with inclines at t eir ends, a worm shaft and connections for actuating the eccentrics and star wheels on the worm shaft, of sliding collars on the power shaft having lugs adapted to be engaged by the respective star wheels, for the purpose set forth, sliding pins in the carrying disks whose ends are adapted to ride up the inclines ,of the grooves and whose outer ends are ada ted to engage the sliding collars respectiveil a driving shaft, and connections between said eccentrics and driving shaft for rotating thel` latter, substantially as described, for the purpose specified.

15. In a device of the character described the combination with the driving shaft, driving eccentrics, eccentric straps and arms 77, of a driving shaft having a drum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, and mechanism actuated by the eccentrics for causing the drum straps to alternately grip and release the drum.

16. In a device of the character described the combination with the driving eccentrics, eccentric straps and arms 77, of a driving shaft, a drum thereon, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, rods carrying shoes bearing against the other arms ext-ending from the drum straps, gri ping eccentrics, straps carried by the ro s -means for oscillating t and inclosing the grippingl eccentrics and e gripping eccentrics whereby the drum straps are caused to alternatelygrip and release the drum.

17. In a device of the character described the combination with the driving eccentrics, eccentric straps having bodies and arms 77 extending therefrom, a driving shaft and a drum thereon, of straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, rods carrying shoes bearing against the other drum strap arms, gripping eccentrics carried by the bodies, straps carried by the rods and inclosing said @ripping eccentrics and means for oscillating the grip )ing cccentrics, substantially as described for the purpose specified.

18. In a device of the character described the combination with the driving eccentrics having raised and depressed peripheral surfaces, eccentric straps having bodies and arms 77 extending therefrom, a driving shaft and a drum thereon, of straps inclosing said drum and having arms extending therefrom to one of which each arm 77is ivoted, rods carrying shoes ,bearing against t e other drum stra arms, -gripping eccentrics carried by the bo ies, straps carried by the rods and inclosing the gripping eccentrics and dous connected tothe gripping eccentrics and ad i ted to engage the raised and depressed sur aces on the driving eccentrics whereby the gripping eccentrics are oscillated, substantially as described, for the purpose specified.

19. The combination with the disks, op-

.positely movable eccentrics carried thereby and provided With raised and depressed peripheral surfaces and straps having arms 77 extending therefrom, of a drum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, rods carrying shoes bearing against the other drum strap arms and means for actiiating the shoes whereby the drum stra s are caused to alternately grip and 'release t ie drum. l

20. The combination with the disks, oppositely movable driving eccentrics carried thereby and provided with raised and depressed peripheral surfaces and stra s having arms 77 extending therefrom, of a drum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77. is pivoted, rods carrying shoes bearing against the other drurnstrap arms, straps at the other ends of said rods, grip ling eccentrics inclosed by said straps an means for oscillating said eccentrica substantially as described, for the purpose s ecifil'ed.

21. The' combination with t e disks, oppositely movable driving ec'centries carried there'b and Aprovided with raised and depresse peripheral surfaces and straps havnig arms 77 extending therefrom, of a drum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, rods carrying shoes bearing against the other drum strap arms, straps at the other ends of said rods, gripping eccentrics inclosed by said straps, and dogs rigidly secured to the gripping eccentrics and bearing upon the peripheral surfaces ofthe driving eccentri'cs, whereby the griping eccentrics are oscillated, substantialiy as described, for the purpose specified.

22. The combination with the disks, oppositely movable driving eccentrics carried thereby and provided with raised and depressed peripheral surfaces and straps having arms 77 extending therefrom, of a drum, straps inciosing said drum and having arins 79 to which arms 77 are pivoted, and arms 8() Whose outer faces are arcs of circles of which the pivotal Apoints of arms 77 to arms 79 are the centers, rods carrying shoes bearing against the curved outer faces of ar'ms 80, straps at the other ends of said rods, gripping eccentric's inclosed by said straps an means for oscillating the grip ing eccentrics, substantially as described, fdr the purpose specified.

23. The combination with the disks, oppositely movable driving eccentrics carried thereby and provided with raised, and depressed peripheral surfaces 'and straps having arms 77 extending therefrom, of a drum, straps inclosing said drum and having arms extending therefrom to one of Which each arm 77 is pivoted, rods carrying shoes bearing against the other drum strap arms and extending through arins 77 in a longitudinally oblique direction, straps at the other ends of said rods and grip ing eccentrics inclosed by saidl straps andp having dogs rigidly secured thereto Whi'ch engage the peripheralsurfaces of the driving disks.

24. The combination with the disks, op o` sitely movable driving eccentrics cari-fed thereby and provided with raised and dei thereby' and provided vvith raised and 'de-` pressed peri 'heral surfaces. stra s iiiclosinr said eccentrics and having bo ies 76 and arms l77 extending therefrom, of a drum. strapsinclos'ing said drinn 'and havin arms extending therefrom to one of vvhie each arm 77 is pivoted, rods carrying shoes bearing against the other driim strap arms, straps at the other ends of said rods, gripping eccentrics carried'by the bodies and inclosed by said strips, shafts to which said eccentrics are rigidl secured and dogs rigidly secured to said s afts and bearing on the peri heral surfaces of the driving eccentrics W ereby the grippin'lgh'eccentrics are operated.

26. e combination with the disks, oppositely movable -driving eccentrics carrled therebv and provided with raised and depressed peripheral surfaces merging into each other by means of inclines, and straps having arms 77 extending therefrom, of a drum, straps inclosing said drum and havin arms extending therefrom to one of Whic each arm 77 is pivoted, rods` carrying shoes bearing against the other drum strap arms, straps at the other ends of said rods, gripping eccentrics inclosed by said straps and dogs carried by the gripping eccentrics and actuated b the inclines on the driving eccentrics to osci late the ri ping eccentrics, substantially as described, fdr the purpose specified.

27 The combination with the disks, oppositely movable driving eccentrics carried thereby and provided with rooves and raised and depressed eriphera surfaces on opposite sides thereof? each raised surface lying opposite to a de iessed surface and stra s 1n said grooves aving arms 77 exten ing therefrom, of a drum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, and means for actuating the other drum stra arms to cause the drum straps to alternate y grip and release the drum.

2Q. The combination with the two separate disks and driving eccentrics carried thereby, of a drum, straps inclosing said drum, connections intermediate the drum stra s and the driving eccentrics whereby the ormer are caused to alternately grip and release the drum, and means for oppositely adjusting the eccentrics on their respective disks so as to rotate the drum in-either direction.

29. The combination With the disks, oppositely movable eccentrics carried thereby and eccentric straps having arms 77 extending therefrom, of a drum, straps inclosing said drum, arms 79 extending from said straps to which arms 77 are pivoted, arms 80 extending from said straps and having outer faces curved in an arc o a circle of which the pivotal point of arms77 to arms 79 is the center, shoes bearing on said curved outer faces, and. means actuated by the driving eccentrics for causing the shoes to bear onY arms 80 and clamp the eccentric straps about the drum.v

30. The combination with the disks, oppositely movable eccentrics carried thereby, a worm shaft journaled in the disks, actuating mechanisml therefor, connecting mechanism intermediate the worm shaft and the eccentrics and eccentric straps having arms 77 extending therefrom, of a drum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, and means actuatedby the eccentrics for causing the drum straps to alternately grip and release the drum.

31. In a device of the character described the combination with a powershaft, carrying disks thereon, eccentrlcs adapted to slide transversely on said disks, a worm shaft j ournaled in the disks and having star Wheels at its ends and connecting mechanism intel'- lmediate the Worm shaft and the eccentrics whereby the latter may be moved oppositely in either direction, of sliding collars on the power shaft having lugs ada ted to be engaged by the respective star w eels, arms extendin from said collars, a longitudinally movabe rod to which said arms are connected, adjustable collars on said rod, s rings bearing against said collars to retain tfie rod in its normal position, a `driving shaft, and connections between said eccentrics and driving shaft for rotatin the latter. 32. The combination with the isks, oppositely movable eccentrics carried thereby, a worm shaft j ournaled in the disks and having star wheels at its ends, connecting mechanism intermediate the worm shaft and the eccentrics and vsliding collars having lugs by which the star wheels are actuated, of eccentric straps having arms 77-extending therefrom, a drum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted,and means actuated by the eccentrics for causing the drum straps to alternately grip .and 'release the drum.

33 The combination with the disks, oppositely movable eccentrics carried thereby and having grooves in their outer faces, a

worm shaft having star wheels at its ends by which the eccentrlcs are adjusted o lpositely, for the purpose set forth, slidin co ars having lugs by which the star W eels are actuated and sliding pins in the disks which engage the inclines in the eccentrics to move the siding collars out of the engaging position at the extreme of the throw of the eccentrics, of eccentric stra s having arms 77 extending therefrom, a rum, straps inclosing said drum and having arms extending therefrom to one of which each arm 77 is pivoted, and means actuated by the eccentrics for causin the drum straps to alternately grip and re ease the drum.

34. The combination with the disks, oppositely movable eccentrics carried thereby and provided with raised and depressed peripheral surfaces, eccentric straps and arms 77 extending therefrom and havlng yokes at their forward ends, of a drum, drum straps having arms extending therefrom to one of which each yoke is pivoted, rods carrying A,shoes bearing against the other drumstrap' armfandmeans. for actuating said rods'to cause the strap to grip and release the drum.

35. The combination with the disks, driving eccentrica carried thereby, a Worm shaft journaled in the disks and having star wheels vat its ends and connecting mechanism inter- I ing eccentrics carried thereby, a worm shaft journaled in the disks and'having star wheels at its ends and connecting mechanism intermediate the Worm shaft and-the eccentrics, for the purpose set` forth, of a sliding collar on the power shaft having lugs adapted to be engagpd on the outer side b y one .of the starV whee afsliding collar havin lugsadapted to be engaged on the inner si e by the other star wheel, a driving shaft, and connections between. vsaid eccentrics and driving shaft for rotating the latter, substantially as described, for the purpose specified.

' 37. The com'bmation with the disks and driving eccentrica carried thereby, of a'drum,

' stra s inclosing said drum, connections interme late the driving eccentrics and the drum stra s-whereby the latter arecaused to alternate y grip and release the drum and a foot lever and mtermediate connections whereby the eccentrics may be moved oppositely on the disks t change the speed or reverse or brake the drum. '1 r 38. Thecombination with the power shaft, ca disks and driving eccentrics, of a driving shaft, a drum thereon, straps inclosingsaid drum, connections intermediate the drlving eccentries and the drum straps Where y the latter are caused to alternate directly (grip and release the drum and a foot lever an intermediate connections whereby the eccentrics may be moved oppositely on the disks to chan e the speed or reverse or vbrake the power s aft;

39. The'combination with the power shaft,

carrying disks, driving, eccentrica provided withraised and depressed peripheral surfaces and straps having arms 77 extendin vtherefrom, of a drivin shaft, a drum t ereon,

straps inclosing said drum and havin arms extending therefrom to one of whic each arm 77 is pivoted, rods carryingshoes bearing against the other drum strap arms, straps `at the other ends of said rods, gripping eccentrics inclosed b said straps, connections intermediater the riving eccentrics and the griplping eccentrica whereby the latter are osci ated and a foot leveran'd intermediate connections whereby the 'drivingeccentrics rmay be moved on the disks to-change the speed or brake or reverse the power shaft.

40. In a device of the vcharacter described the combination with adjustable ,drivin eccentrics, of a drum, straps nclosingan fittin sai straps and the eccentrics whereby the said drum, connections intermediate straps are caused to alternatel directly rip A and release the drum and a roc shaft an intermediate connections whereby the eccentrics may beadjusted to increase or diminish d the.` speed on reverse or brake the drum.

41. The combination with adjustable drive ing eccentrics provided with raised and depressed peripheral surfaces and straps having arms 77 extending therefrom, of a drum, straps inclosing said drum, grippingeccentrics and connections whereby said straps are caused to alternately grip and release the drum, and connections intermediate the drivin eccentrics and the ipping eccentrics where the latter are osclllated.

42. he combination with adjustable driving eccentrics4 provided with raised and depressed peripheral surfaces, and straps havlng arms 77 extending therefrom, of a drum, straps inclosing said drum, grip ing eccentrics, connections intermediate t e gripping eccentrica and the drum straps whereby the latter are caused to alternately rip and release the drum and dogs carried y the rippin eccentrics and engaging the peripheral, su aces of the driving eccentrics to oscillate the gripping eccentrics. i

In testimony whereof I affix my signature, in presence of two witnesses. 4

. FRANK C. CRAW.

Witnesses: 

